Finding the Fourth Proportional to 1,623.37, 2,240.69 and 951.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.37 : 2,240.69 = 951.78 : x
2. Step 2: Convert to fraction form
   1,623.37/2,240.69 = 951.78/x
3. Step 3: Cross multiply
   1,623.37x = 2,240.69 × 951.78
4. Step 4: Simplify right side
   1,623.37x = 2,132,643.93
5. Step 5: Solve for x
   x = 2,132,643.93/1,623.37
6. Step 6: Final answer
   x = 1,313.71